main() {
  //list
  var rs = ['a', 'b', 'c'];
  for (var item in rs) {
    print(item);
  }

  //map
  Map<String, int> map = {'one': 1, 'two': 2, 'twelve': 12};

  void iterateMapEntry(key, value) {
    map[key] = value;
    print('$key:$value'); //string interpolation in action
  }

  map.forEach(iterateMapEntry);
}
//EOP
